xgen is used interally as a replacement for the SUN RPC rpcgen program. This takes a ’.x’ description of data structures and generated the C code required to read and write those structures to disk. Internally, Aubit4GL makes use of .x files for describing forms, menus, and compiled P-Code.

The code generated by xgen is used by the generic packers to write the data in packed, memory packed, and gzip’d formats.